Abstract
Removing some sections of the stator yoke in a permanent magnet brushless machine can be beneficial for reducing punching waste and simplifying motor manufacture. However in some cases, restricting the possible flux paths in this way will have a detrimental impact on the torque and air-gap harmonics. This paper discusses the potential implications of modular stator core arrangements and presents the air-gap flux density harmonics and winding factors for potential slot/pole combinations. FEA simulations are presented to support the analytical calculations. The analysis suggests that the performance reduction from using a modular stator is minimal when the number of slots and poles are similar but drops off substantially when this is not the case. A modular core stator will increase the MMF sub-harmonics due to the magnet field but can reduce the sub-harmonics due to the armature if a single layer winding is used. The effect of slotting is very similar for a modular and conventional core machine and FEA results match previously published analytical analyses.
Original language | English |
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Title of host publication | Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 5048-5055 |
Number of pages | 8 |
ISBN (Print) | 978-147990335-1 |
DOIs | |
Publication status | Published - 2013 |
Event | IEEE Energy Conversion Congress and Exposition (ECCE 2013) - Denver, Colarado, Denver, United States Duration: 15 Sep 2013 → 19 Sep 2013 Conference number: 2013 |
Conference
Conference | IEEE Energy Conversion Congress and Exposition (ECCE 2013) |
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Abbreviated title | ECCE |
Country | United States |
City | Denver |
Period | 15/09/13 → 19/09/13 |